# Probability Distribution vs UBP Pocket

The clearest difference is in-app purchases: UBP Pocket at none against Probability Distribution's 1. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Probability Distribution sells 1 one-off in-app purchase. UBP Pocket asks for nothing beyond the download.

Probability Distribution ships an update every 2 weeks, UBP Pocket every 4 weeks. The most recent releases landed on October 12, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Probability Distribution | UBP Pocket |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (15 ratings)](https://appshunter.io/ios/app/probability-distribution/id6447695305/reviews)** | — |
| Number of ratings | **15** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 4 weeks |
| Monetization | Paid | — |
| Size | 7 MB | 51 MB |
| Requires iOS | 16.0 | **15.5** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Madiyar Aitbayev](https://appshunter.io/developer/1229466587) | [Universidad Blas Pascal](https://appshunter.io/developer/1064051561) |

## What reviewers say

### Probability Distribution

[App page](https://appshunter.io/ios/app/probability-distribution/id6447695305)

This app allows users to calculate probabilities and visualize various continuous and discrete probability distributions. It supports a wide range of common distributions and plans to add more in the future.

**Highlights:** Calculate probabilities, Visualize distributions, Normal (Gaussian) distribution, Binomial distribution, Poisson distribution, Exponential distribution

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All Distributions | $2.99 | one-time |


### UBP Pocket

[App page](https://appshunter.io/ios/app/ubp-pocket/id6670763788)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Probability Distribution free?

Probability Distribution is free to download, with in-app purchases available.

### Is UBP Pocket free?

UBP Pocket is free to download, with no in-app purchases.

### Do Probability Distribution or UBP Pocket have ads?

Neither Probability Distribution nor UBP Pocket shows ads.

### Which is updated more often, Probability Distribution or UBP Pocket?

Probability Distribution ships an update every 2 weeks, and UBP Pocket every 4 weeks. Most recently, Probability Distribution was updated on October 12, 2026 and UBP Pocket on October 18, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*